From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9CD3FC10F00 for ; Wed, 6 Mar 2019 15:52:44 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6EC9A20684 for ; Wed, 6 Mar 2019 15:52:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="HTJQOkdv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6EC9A20684 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Gsi6NRmp/rSBPork7u9Os4EmpqlErP8V7LBPQgT8/N4=; b=HTJQOkdvN5WIHk 9TAnHo6Qea3uASvQdf/kZA1cZz2CKPWgZW3QJiX153ws0azMj15QBpm8M+tRsnf5T8U0q0gjZp5xm aL8EzDUt5LWFiVYPI+e0GGyNxik2QGbPXjiJef0tvle6EfUNp2DbdNcdeMFDqIJawozHqRvvNndOx J4CgQtyVfhpv07q2wqPZjO+uGvB8r57CZplqOKtgapr/yeGvTbZ53gFbTsAe/VgYI3DSSl7+K2x/d hZ6OYXEBx3RZFxVNjuoR6Gq3jRfwZKrIW32z1AJba/QgpZ2wsGtOuQSzFJcsq0JpnN3Gk+0a5uebH rqDLjgoPpqpYAAtxWcDw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1YqW-0001Qo-2y; Wed, 06 Mar 2019 15:52:40 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1YpV-0007qo-Kn for linux-arm-kernel@lists.infradead.org; Wed, 06 Mar 2019 15:52:03 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 9261F80D; Wed, 6 Mar 2019 07:51:37 -0800 (PST) Received: from e112269-lin.arm.com (e112269-lin.cambridge.arm.com [10.1.196.69]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 573AC3F703; Wed, 6 Mar 2019 07:51:34 -0800 (PST) From: Steven Price To: linux-mm@kvack.org Subject: [PATCH v4 14/19] x86: mm: Don't display pages which aren't present in debugfs Date: Wed, 6 Mar 2019 15:50:26 +0000 Message-Id: <20190306155031.4291-15-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190306155031.4291-1-steven.price@arm.com> References: <20190306155031.4291-1-steven.price@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190306_075138_404882_B0FCD227 X-CRM114-Status: GOOD ( 12.75 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , x86@kernel.org, Arnd Bergmann , Ard Biesheuvel , Peter Zijlstra , Catalin Marinas , Dave Hansen , Will Deacon , linux-kernel@vger.kernel.org, Steven Price , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Ingo Molnar , Borislav Petkov , Andy Lutomirski , "H. Peter Anvin" , James Morse , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, "Liang, Kan" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org For the /sys/kernel/debug/page_tables/ files, rather than outputing a mostly empty line when a block of memory isn't present just skip the line. This keeps the output shorter and will help with a future change switching to using the generic page walk code as we no longer care about the 'level' that the page table holes are at. Signed-off-by: Steven Price --- arch/x86/mm/dump_pagetables.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c index cf37abc0f58a..f9eb25dd3766 100644 --- a/arch/x86/mm/dump_pagetables.c +++ b/arch/x86/mm/dump_pagetables.c @@ -304,8 +304,8 @@ static void note_page(struct seq_file *m, struct pg_state *st, /* * Now print the actual finished series */ - if (!st->marker->max_lines || - st->lines < st->marker->max_lines) { + if ((cur & _PAGE_PRESENT) && (!st->marker->max_lines || + st->lines < st->marker->max_lines)) { pt_dump_seq_printf(m, st->to_dmesg, "0x%0*lx-0x%0*lx ", width, st->start_address, @@ -321,7 +321,8 @@ static void note_page(struct seq_file *m, struct pg_state *st, printk_prot(m, st->current_prot, st->level, st->to_dmesg); } - st->lines++; + if (cur & _PAGE_PRESENT) + st->lines++; /* * We print markers for special areas of address space, -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel